|Publication number||US7834923 B2|
|Application number||US 10/389,731|
|Publication date||Nov 16, 2010|
|Priority date||Mar 13, 2003|
|Also published as||US20040179116|
|Publication number||10389731, 389731, US 7834923 B2, US 7834923B2, US-B2-7834923, US7834923 B2, US7834923B2|
|Inventors||Donald J. Stavely, Robert P. Cazier, Amy E. Battles, James W. Owens, Daniel J. Byrne, Dan L. Dalton|
|Original Assignee||Hewlett-Packard Development Company, L.P.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (15), Referenced by (4), Classifications (30), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention relates generally to digital imaging and more specifically to digital still cameras and digital camcorders.
Both digital camcorders and digital still cameras having a video mode produce a single digital video stream that may be readily edited and, if desired, stored on an optical medium such as a DVD. Some devices are also capable of operating in picture-in-picture (PIP) mode, in which an inset second view is embedded within a larger background view. In some devices, it is even possible to record video in this PIP mode. Thus, two different views of the scene are recorded simultaneously in a single video stream.
In some applications, however, it is advantageous to generate two or more different views as separate, independent video streams. Typically, this is accomplished through the use of multiple cameras. Using multiple cameras can be both expensive and cumbersome.
It is thus apparent that there is a need in the art for an improved apparatus and method for producing and storing multiple video streams.
A digital imaging device that produces and stores multiple video streams is provided. An associated method for capturing digital video in the digital imaging device is also provided.
Other aspects and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the invention.
Multiple video streams may be produced simultaneously in a digital imaging device by sampling multiple regions of a single imaging sensor array. Saving the multiple video streams in a memory provides a variety of post-production options. For example, portions of the video streams may be edited into a single combined video presentation, or two or more video streams may be combined in split-screen, picture-in-picture, or auto-fade fashion.
In a specific example, a parent records a child's piano recital using a digital camcorder. The digital camcorder produces and records two independent video streams simultaneously: (1) a wide-angle view showing the child playing the piano from 15 feet away and (2) a cropped view showing only the child's torso and hands at the keyboard. Since the two video streams are saved separately, video editing software may be used to create a single video presentation combining portions of both the wide-angle and close-up views for a more varied, interesting presentation. In some embodiments, this editing and combining of the two video streams may be performed manually using the video editing software. In other embodiments, the video editing software may automatically combine the two streams to create a single video stream. In automatically combining the two video streams, the video editing software may employ techniques well known in the art such as picture in picture, split screen, or auto-fade. In the case of auto-fade, for example, the video editing software may alternately fade between the first and second video streams at predetermined intervals.
Implementation of the invention may differ somewhat depending on whether imaging sensor array 145 is of the CCD or CMOS type. One advantage of a CMOS imaging sensor array is that sampling logic 150 may address it directly at the picture element (pixel) level, much like a RAM. However, some CMOS imaging sensor arrays may be read at a given pixel only once per exposure (destructive read).
In some embodiments, the first and second video streams may, at 415, be stored in a single data file organized such that the two video streams are separable (separately readable). In other embodiments, the two video streams may be stored in separate data files at 415. In either case, the resulting video streams may be post-processed using suitable video editing software.
The foregoing description of the present invention has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and other modifications and variations may be possible in light of the above teachings. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application to thereby enable others skilled in the art to best utilize the invention in various embodiments and various modifications as are suited to the particular use contemplated. It is intended that the appended claims be construed to include other alternative embodiments of the invention except insofar as limited by the prior art.
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|U.S. Classification||348/308, 348/218.1|
|International Classification||H04N5/92, H04N5/232, G11B27/034, H04N5/781, H04N5/907, H04N5/265, H04N5/91, G11B27/032, H04N5/85, H04N5/77, H04N5/372, H04N5/374, H04N5/76, H04N5/335|
|Cooperative Classification||H04N5/9205, H04N5/907, G11B27/032, H04N5/85, G11B27/034, H04N3/1562, H04N5/772, G11B2220/90, H04N5/781, G11B2220/61|
|European Classification||H04N5/77B, H04N3/15E4, G11B27/034, G11B27/032|
|Jul 14, 2003||AS||Assignment|
Owner name: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P., TEXAS
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:STAVELY, DONALD J.;CAZIER, ROBERT P.;BATTLES, AMY E.;ANDOTHERS;REEL/FRAME:013797/0199;SIGNING DATES FROM 20030304 TO 20030306
Owner name: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P., TEXAS
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:STAVELY, DONALD J.;CAZIER, ROBERT P.;BATTLES, AMY E.;ANDOTHERS;SIGNING DATES FROM 20030304 TO 20030306;REEL/FRAME:013797/0199
|Apr 28, 2014||FPAY||Fee payment|
Year of fee payment: 4